Self-proning in COVID-19 patients on low-flow oxygen therapy: a cluster randomised controlled trial.

ERJ Open Res · 2021 · PMC7869594 · PMID 33718487

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did not reach statistical significanceno p-value reported

A clinically meaningful reduction of oxygen flow and an improved S pO 2 / F iO 2 ratio were observed, although they did not reach statistical significance.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.